validations:we6-solid-twisted-beam

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validations:we6-solid-twisted-beam [2022/01/08 11:41]
Ali Baba 		validations:we6-solid-twisted-beam [2023/05/31 20:40]
Ali Baba [Validation data]
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-{{description>SesamX WE6 SOLID element verified against the Abaqus C3D6 element.}}+{{description>SesamX WE6 SOLID-ISOPARAM element verified against the Abaqus C3D6 element.}}
  
-====== WE6 SOLID element twisted beam validation ======+====== WE6 SOLID-ISOPARAM element twisted beam validation ======
  
-This validation aims at assessing the behavior of the SesamX WE6 SOLID element against the equivalent Abaqus C3D6 element. Both elements implement the iso-parametric formulation. **However the stiffness integration is not performed the same: SesamX uses the exact 6-point Gaussian integration scheme, whereas Abaqus uses the reduced 2-point Gaussian integration scheme**. +This validation aims at assessing the behavior of the SesamX WE6 SOLID-ISOPARAM element against the equivalent Abaqus C3D6 element. Both elements implement the iso-parametric formulation. **However the stiffness integration is not performed the same: SesamX uses the exact 6-point Gaussian integration scheme, whereas Abaqus uses the reduced 2-point Gaussian integration scheme**. 
 Using a reduced integration scheme is beneficial to reduce element locking. However, it also [[http://130.149.89.49:2080/v6.14/books/ver/default.htm | makes the element unstable]]: it introduces a zero-energy mode in the element. Practice has shown that this mode disappears once an assembly of C3D6 element is built. At the opposite, in SesamX we chose to stay safe and avoid exposing an unstable element to the user. Using a reduced integration scheme is beneficial to reduce element locking. However, it also [[http://130.149.89.49:2080/v6.14/books/ver/default.htm | makes the element unstable]]: it introduces a zero-energy mode in the element. Practice has shown that this mode disappears once an assembly of C3D6 element is built. At the opposite, in SesamX we chose to stay safe and avoid exposing an unstable element to the user.
  
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 ===== Validation data ===== ===== Validation data =====
  
-  * {{ :validations:701_we6_solid_std_beam_3d.inp | Abaqus input file}} +  * {{ :validations:701_we6_solid_isoparam_beam_3d.inp | Abaqus input file}} 
-  * {{ :validations:701_we6_solid_std_beam_3d.sx | SesamX input file}}+  * {{ :validations:701_we6_solid_isoparam_beam_3d.sx | SesamX input file}} 
  
  • validations/we6-solid-twisted-beam.txt
  • Last modified: 2023/05/31 20:40
  • by Ali Baba